The benefits and risks of potential motorcycle protective devices (such as airbags) may depend on the pre-crash position of the rider on the motorcycle. Therefore an understanding of the range of riding positions is needed for research into the risks and benefits of these devices. A statistical model was developed that describes the range motorcycle riding positions, in terms of mean, variance, and correlation parameters; as a function of rider stature, motorcyclerider interface geometry (seat, hand grips, footrest), and geographic region, based on data collected from Japan, Europe (the Netherlands), and the United States. The rider position and motorcycle-rider interface geometry data was digitized from images of 1390 riders as they were riding on public roadways. A graphical user interface was developed to enable a user to select from and view the range of riding positions described by the model.